大港油田埕海二区沙一下特殊岩性油藏开发方案设计

埕海二区沙一下为特殊岩性油藏,受构造和岩性双重控制。此区块裂缝分布,断块多,非均质性严重,油水关系复杂。针对上述特点,对沙一下进行优质储层带划分并分析影响此类油藏开发效果的因素。确定埕海二区沙一下开发原则,优选合理开发方式,对井型、井网、井距等参数进行优化。在油藏工程设计及数值模拟优化基础上,设计合理开发方案,综合对比各方案的开发参数与经济指标,优选了合理高效开发埕海二区沙一下特殊岩性油藏的开发方案,并给出了相应的开发建议。

Development program design of the special lithology reservoir in EsI underneath of Shahejie Formation in the 2nd Block of Chenghai,Dagang Oilfield

Esl underneath of Shahejie Formation is special lithology reservoir, which is controlled by both structure and lithology. The block has the following characteristics - fracture distribution, fault exist- ing, serious heterogeneity, complex oil--water relationship. Combined with these characters, classify the high quality reservoirs and analyze the parameters that affect reservoir development. Then determine the development principles of this block＇ choose the reasonable development way and optimize well type, well pattern, well spacing and other parameters. Based on reservoir engineering design and numerical simula- tion optirnization, design the reasonable development program. Through comparing the development pa- rameters and economic indexes among different eases, optimize the reasonable program to develop the block reasonably and effectively and present the corresponding development suggestions.